Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
010025goodexcellent41excellent
000026goodexcellent41excellent
230023goodexcellent41excellent
220020goodexcellent31excellent
210018goodexcellent31excellent
200015goodexcellent21excellent
190010excellentexcellent21excellent
18006excellentexcellent11excellent
17006excellentexcellent11excellent
16005excellentexcellent11excellent
150021goodexcellent11excellent
14004excellentexcellent11excellent
13004excellentexcellent11excellent
12005excellentexcellent11excellent
11003excellentexcellent11excellent
10004excellentexcellent11excellent
09004excellentexcellent11excellent
08006excellentexcellent11excellent
07006excellentexcellent11excellent
06007excellentexcellent11excellent
05007excellentexcellent11excellent
04007excellentexcellent11excellent
03007excellentexcellent11excellent
02007excellentexcellent21excellent